package com.atguigu.springcloud.alibaba.service.impl;

import com.atguigu.springcloud.alibaba.dao.OrderDao;
import com.atguigu.springcloud.alibaba.domain.Order;
import com.atguigu.springcloud.alibaba.service.AccountService;
import com.atguigu.springcloud.alibaba.service.OrderService;
import com.atguigu.springcloud.alibaba.service.StorageService;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Resource
    private OrderDao orderDao;
    @Resource
    private StorageService storageService;
    @Resource
    private AccountService accountService;

    /**
     * @GlobalTransactional name名字随意，具备唯一性
     * @param order
     */
    @Override
    @GlobalTransactional(name = "fsp-create-order",rollbackFor = Exception.class)
    public void create(Order order) {
        log.info("--------> 开始新建订单");
        // 1.新建订单
        orderDao.create(order);

        // 2.扣减库存
        log.info("--------> 订单微服务开始调用库存，做扣减Count");
        storageService.decrease(order.getProductId(),order.getCount());
        log.info("--------> 订单微服务开始调用库存，做扣减...END");

        // 3.扣减账户余额
        log.info("--------> 订单微服务开始调用账户，做扣减Money");
        accountService.decrease(order.getUserId(),order.getMoney());
        log.info("--------> 订单微服务开始调用账户，做扣减...END");

        // 4.修改订单状态，从0改为1
        log.info("--------> 修改订单状态开始");
        orderDao.update(order.getUserId(),0);
        log.info("--------> 修改订单状态结束");

        log.info("--------> 下订单结束，O(∩_∩)O");
    }
}
